Tata Wiron IS 14268 Class 2 Low Relaxation LRPC Strand

The Tata Wiron IS 14268 Class 2 Low Relaxation LRPC Strand, from Tata Wiron (Tata Steel), has been developed for metro rail, atomic power plant and cable-stay projects where Tata Wiron’s Tarapur facility is already an approved supplier and Class 2 tolerances are the project default.

In line with IS 14268 (Low Relaxation Strand) requirements, breaking loads range breaking loads of 102.3–260.7 kN across the same four-diameter range, with every point of the strand tested online during manufacturing so quality issues surface in the plant rather than on site.

Site engineers turn to the Tata Wiron IS 14268 Class 2 Low Relaxation LRPC Strand for the atomic power plants at Kota, Kaiga and Tarapur and the metro rail projects in Delhi, Bangalore, Mumbai, Kolkata, Hyderabad, Chennai and Jaipur that Tata Steel names among its mega-project references.

Paperwork accompanying the Tata Wiron IS 14268 Class 2 Low Relaxation LRPC Strand includes Tata Steel’s fully integrated manufacturing cycle, from its own iron ore mines through in-house steel making and wire rod rolling at Tarapur, Indore and Jamshedpur, supplied in reeless cheese coils of 1–3.5 MT in either dry or oiled condition depending on site storage conditions.

On-site handling of the Tata Wiron IS 14268 Class 2 Low Relaxation LRPC Strand follows standard prestressing steel practice: cut only with an abrasive disc cutter or shear cutter, never with a flame or welding torch, since heat changes the steel’s microstructure and its mechanical properties. Coils should be unloaded with a crane rather than dropped off the vehicle, stored under cover on a raised platform away from direct ground or water contact, and protected with a vapour phase inhibitor if they will sit on site for an extended period before stressing.